E.ON SE vs Insite Energy: most-reported complaints compared
Most-reported issues at E.ON SE and Insite Energy, according to reviewers on Trustpilot — classified by our automated reader and backed by verbatim quotes from distinct reviews. This is a side-by-side of what reviewers report, not a score, rating or recommendation for either company.
E.ON SE
TrustScore 1.2 · 210 reviews on Trustpilot.
101 reviews analysed, 2022-04-10 to 2026-10-21.
Complaint rate (recent window): 93%
0% of negative reviews get a company reply.
“We have received several email notifications over the past 2 weeks ranging from £2000 in credit and -£2000 in debt.”
Insite Energy
TrustScore 4.7 · 4,490 reviews on Trustpilot.
408 reviews analysed, 2025-10-03 to 2026-11-05.
Complaint rate (recent window): 5%
98% of negative reviews get a company reply.
“Live chat messages get read and then ignored”
Reported on both
Issues with an evidenced category (at least two verbatim quotes) on both sides.
| Issue | E.ON SE | Insite Energy |
|---|---|---|
| Billing errors | 50% | 23% |
| Support unhelpful | 50% | 38% |
| Support unreachable | 19% | 38% |
| Account/app problems | 12% | 16% |
| Overcharging | 7% | 9% |
Method: reviews are classified into a fixed complaint taxonomy by an automated reader; every category shown is backed by at least two verbatim quotes from distinct reviews. Figures are census classifications, not official statistics, and reflect what reviewers reported — not findings of wrongdoing by either company. Not affiliated with, endorsed by, or sponsored by Trustpilot A/S, E.ON SE or Insite Energy.